# Schottky Rectifier, 40 V, 3 A, Single, SMAF, 2 Pins, 500 mV

![Product image](https://novapart.co/image/farnell:2748288RL/)

**URL**: https://novapart.co/products/B340AF-13/schottky-rectifier-40-v-3-a-single-smaf-2-pins-500
**SKU**: B340AF-13
**Manufacturer**: DIODES INC.
**Category**: Semiconductors - Discretes || Diodes & Rectifiers || Schottky Diodes || Schottky Rectifier Diodes
**Price**: €0.0930
**Stock**: 1000+
**Lead Time**: 78 days (indicative)

## Description

Repetitive Reverse Voltage Vrrm Max:40V; Forward Current If(AV):3A; Diode Configuration:Single; Diode Case Style:SMAF; No. of Pins:2Pins; Forward Voltage VF Max:500mV; Forward Surge

## Specifications

| Parameter | Value |
|---|---|
| Svhc | Lead (25-Jun-2025) |
| No. Of Pins | 2Pins |
| Product Range | - |
| Qualification | - |
| Diode Mounting | Surface Mount |
| Diode Case Style | SMAF |
| Diode Configuration | Single |
| Forward Voltage Max | 500mV |
| Forward Surge Current | 80A |
| Average Forward Current | 3A |
| Operating Temperature Max | 150°C |
| Repetitive Peak Reverse Voltage | 40V |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:2748288RL/)

| 

**B340AF/B345AF Green 3.0A SCHOTTKY BARRIER RECTIFIER Product Summary Features and Benefits** B340AF/B345AF  Reduced Low Forward Voltage Drop (VF); Better Efficiency and Cooler Operation **Number Part VRRM (V) IO (A) V@ +25°C F(MAX) (V) IR(MAX) @ +25°C (mA)**  Reduced High-temperature Reverse Leakage; Increased Reliability against Thermal Runaway Failure in High B340AF 40 3 0.50 0.20 Temperature Operation. B345AF 45 3 0.50 0.30  **Lead-Free Finish; RoHS Compliant (Notes 1 & 2)**  **Halogen and Antimony Free. “Green” Device (Note 3) Description and Applications Mechanical Data** The B340AF is a 3A 40V and B345AF is a 3A 45V single rectifier  Case: SMAF packaged in the low profile SMAF package. Providing low VF and  Case Material: Molded Plastic, “Green” Molding Compound. UL excellent reverse leakage stability at high temperatures, this device is Flammability Classification Rating 94V-0 ideal for use in general rectification applications such as:  Moisture Sensitivity: Level 1 per J-STD-020  Terminals: Finish - Matte Tin Annealed over Copper Leadframe.  Boost Diodes Solderable per MIL-STD-202, Method 208 ed  Blocking Diodes  Polarity: Cathode Band  DIODES. Recirculating Diodes ~~@~~  Weight: 0.036 grams (Approximate) ~~Cd~~ 

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## **Ordering Information** (Note 4) 

|**Ordering Informationg Information Information** (Note 4)|||
|---|---|---|
|**Part Number**|**Case**|**Packaging**|
|B340AF-13|SMAF|10,000/Tape & Reel|
|B345AF-13|SMAF|10,000/Tape & Reel|



- Notes: 1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied. 

   2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 

   3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. 

   4. For packaging details, go to our website at http://www.diodes.com/products/packages.html. 

## **Marking Information** 

**SMAF** 

- B340AF = Product Type Marking Code = Manufacturers’ Code Marking 

- YWW = Date Code Marking Y = Last Digit of Year (ex: 6 for 2016) WW = Week Code (01 to 53) 

**SMAF** 

B345AF = Product Type Marking Code Ji = Manufacturers’ Code Marking YWW = Date Code Marking Y = Last Digit of Year (ex: 6 for 2016) WW = Week Code (01 to 53) 

1 of 5 **www.diodes.com** 

B340AF/B345AF Document number: DS38974  Rev. 5 - 2 

December 2016 © Diodes Incorporated 

**B340AF/B345AF** 

## **Maximum Ratings** (@TA = +25°C, unless otherwise specified.) 

|Single phase, half wave, 60Hz, resistive or inductive load.<br>For capacitive load,derate current by20%.|||||
|---|---|---|---|---|
|**Characteristic**|**Symbol**|**B340AF**|**B345AF**|**Unit**|
|Peak Repetitive Reverse Voltage<br>Working Peak Reverse Voltage<br>DC Blocking Voltage|VRRM<br>VRWM<br>VRM|40|45|V|
|Average Rectified Output Current|IO|3||A|
|Non-Repetitive Peak Forward Surge Current 8.3ms<br>Single Half Sine-Wave Superimposed on Rated Load|IFSM|80||A|



## **Thermal Characteristics** 

|**Thermal Characteristics**||||
|---|---|---|---|
|**Characteristic**|**Symbol**|**Value**|**Unit**|
|Typical Thermal Resistance Junction to Ambient (Note 5)|RθJA|35|°C/W|
|Typical Thermal Resistance Junction to Case (Note 5)|RθJC|6.0|°C/W|
|Operating and Storage Temperature Range|TJ, TSTG|-55 to +150|°C|



## **Electrical Characteristics** (@TA = +25°C, unless otherwise specified.) 

|**Electrical Characteristics **(@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|**Electrical Characteristics **(@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|**Electrical Characteristics **(@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|**Electrical Characteristics **(@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|**Electrical Characteristics **(@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|**Electrical Characteristics **(@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|**Electrical Characteristics **(@TA = +25°C, unless otherwise specified.)A = +25°C, unless otherwise specified.)= +25°C, unless otherwise specified.)|
|---|---|---|---|---|---|---|
||||||||
|**Characteristic**|**Symbol**|**Min**|**Typ**|**Max**|**Unit**|**Test Condition**|
|Forward Voltage Drop|VF|—<br>—|0.47<br>0.43|0.50<br>—|V|IF= 3A, TJ= +25°C<br>IF= 3A, TJ= +125°C|
|B340AF<br>Leakage Current (Note 6)<br>B345AF|IR|—<br>—<br>—<br>—|0.03<br>15<br>0.04<br>18.0|0.20<br>—<br>0.30<br>—|mA|VR= 40V, TJ= +25°C<br>VR= 40V, TJ= +125°C<br>VR= 45V, TJ= +25°C<br>VR= 45V, TJ= +125°C|
|Typical Capacitance|CT|—|120|—|pF|VR= 4.0V, f = 1MHz|



- Notes: 5. Device mounted on 2inch*2inch Al board. 

6. Short duration pulse test used to minimize self-heating effect. 

2 of 5 **www.diodes.com** 

B340AF/B345AF Document number: DS38974  Rev. 5 - 2 

December 2016 © Diodes Incorporated 

**B340AF/B345AF** 

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100 1000000<br>or a<br>100000<br>150 [o] C<br>ee ——————————<br>10 a ——<br>10000<br>150 [o] C<br>125 [o] C<br>Z Zip ===a ee ee re<br>125 [o] C<br>1 — VAL 1000 | a<br>85 [o] C<br>100<br>0.1 85 [o] C<br>——-sWfSe f[N = a<br>= = — 25 [o] C 10 ee eee eee<br>25 [o] C<br>|e a -55 [o] C —— —————<br>0.01 Ef f | 1 a<br>0 200 400 600 800 0 5 10 15 20 25 30 35 40 45<br>VF, INSTANTANEOUS FORWARD VOLTAGE (mV) VR, REVERSE VOLTAGE (V)<br>Figure 1. Typical Forward Characteristics Figure 2. Typical Reverse Characteristics<br>100000 3.5<br>—<—————_— f = 1MHz Note 5<br>10000 esee| 3<br>ee<br>2.5<br>ee<br>1000 ee<br>2<br>—————————————————<br>NO<br>1.5<br>100 pe<br>a<br>es 1<br>10 Ee es ee<br>————— 0.5<br>ee<br>1 ee es 0<br>0 10 20 30 40 25 50 75 100 125 150<br>VR, REVERSE VOLTAGE (V) TA, AMBIENT TEMPERATURE ( ℃ )<br>Figure 3. Typical Junction Capacitance Figure 4. DC Forward Current Derating<br>1.6<br>1.4<br>1.2<br>1<br>TJ = 150 [o] C<br>0.8<br>0.6<br>0.4<br>0.2<br>0<br>0 1 2 3 4<br>IF(av), AVERAGE FORWARD CURRENT (A)<br>Figure 5. Forward Power Dissipation<br>A)<br>µ<br>(A)<br>, LEAKAGE CURRENT (<br>IR<br>,INSTANTANEOUS FORWARD CURRENT<br>IF<br>CURRENT (A)<br>, JUNCTION CAPACITANCE (pF)CT , AVERAGE RECTIFIED OUTPUT IO<br>DISSIPATION (W)<br>, AVERAGE FORWARD POWER<br>F(av)<br>P<br>**----- End of picture text -----**<br>


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B340AF/B345AF Document number: DS38974  Rev. 5 - 2 

December 2016 © Diodes Incorporated 

**B340AF/B345AF** 

## **Package Outline Dimensions** 

Please see http://www.diodes.com/package-outlines.html for the latest version. 

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SMAF<br>Dim  Min  Max<br>A  0.90 1.10<br>b  1.25 1.65<br>c  0.10 0.40<br>D  2.25 2.95<br>E  3.95 4.60<br>HE 4.80 5.60<br>L  0.50 1.50<br>All Dimensions in mm<br>**----- End of picture text -----**<br>


## **Suggested Pad Layout** 

Please see http://www.diodes.com/package-outlines.html for the latest version. 

**SMAF** 

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X1<br>X<br>a<br>Y<br>Ho<br>Lo CG<br>**----- End of picture text -----**<br>


|**Dimensions Value**|**Dimensions Value(in mm)**|
|---|---|
|**C**|4.00|
|**G**|1.50|
|**X**|2.50|
|**X1**|6.50|
|**Y**|1.70|



4 of 5 **www.diodes.com** 

B340AF/B345AF Document number: DS38974  Rev. 5 - 2 

December 2016 © Diodes Incorporated 

**B340AF/B345AF IMPORTANT NOTICE** DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others.  Any Customer or user of this document or products described herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated website, harmless against all damages. Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks. This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the final and determinative format released by Diodes Incorporated. **LIFE SUPPORT** Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A.   Life support devices or systems are devices or systems which: [ 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. B.   A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated.  Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright © 2016, Diodes Incorporated **www.diodes.com**[;] B340AF/B345AF 5 of 5 December 2016 Document number: DS38974  Rev. 5 - 2 **www.diodes.com** © Diodes Incorporated 

Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: 

2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. 

Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated.  Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. 

December 2016 © Diodes Incorporated 



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---

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